Pedestal type gyratory crusher



5 Sheets-Sheet 1 o. c. GRUENDER PEDESTAL TYPE GYRATORY oRusHER FiledNov. 13, 1943 March 16, 1948.

March 16, 1948. o. c. GRUENDER 2,438,049

PEDESTAL TYPE GYRATORY CRUSHER Filed Nov. l5, 1943 5 Sheets-Sheet 2@HAL/1m March 16, 1948. o. c. GRUENDER PEDESTAL TYPE GYRATORY CRUSHER 5Sheets-Sheet 3 Filed Nov. l5, 1943 JW W j March 16, 1948. o. c. GRUENDERPEDESTAL TYPE GYRATORY CRUSHER 5 sheets-sheet 4 Filed Nov. 15, 1943 nmwwMarch 16, 1948. o. c. GRUENDER 2,438,049

PEDESTAL TYPE GYRAIIORY CRUSHER Filed Nov. 13, 1943 5 Sheets-Sheet 5/fywe or scar fue/edef Patented Mar. 1,6,` 19484 (PEDESTAL TYPE GYRATQRYCRUSHER Oscar C. Gruender, Milwaukee, Wis., assignor to NordbergManufacturing Company, Milwaukee, Wis., a corporation of WisconsinApplication November 13, 194s, serial No. 510,150

9 claims. (cran-20's) f My invention relates to a gyratory crusher, andhas for one purpose to provide improvedmeans for adjusting the positionof the bowl or concave of a gyratory crusher. Y

Another purpose is to provide improved sealing means for preventing theentry of dust into the adjusting structure.

Another purpose is to provide improved means lfor locking the parts whenadjusted.

Another purpose is to provide an improved main frame.

Other purposes will appear from time to time in the course of thespecification and claims.

This application is a. continuation in part of my copending applicationSerial No. 378,850, led

February 14, 1941, which was issued October 10,

V the line 3-3 of Figure 1;

Figure 4 is a section on the line 4-4 of Figure 1, on an enlarged scale;

Figure 5 is a section along the line 5-5 of Figure 2;

Figure 6 is a. partial section of a variant form;

Figure 7 is a vertical axial section through a variant form of thedevice; and

Figure 8 is a section along the line 8-8 of Figure 7.

Like parts are indicated by like characters throughout the specificationand drawings.

Referring to the drawings, I generally indicates any suitablecircumferentlally extending outer frame having a bottom outwardlyextending flange 2 and an upper outwardly extending flange 3, having aconic inner surface portion 4, and a rounded upper and outer surface 5,the two being separated by a reduced or cut away portion 6. The roundedportion 5 extends downwardly in the form of a circumferential apron 1.The ange also includes a generally horizontal portion v ly lessdiameter.

8, having apertures 9, the purpose of which will later appear. Ifdesired, the interior of the flange may be more or less cored out orenlarged, as at I8.

II indicate inwardly extending radia1 spider portions which support aninner sleeve I3, in which may be mounted the lower portion of a post I4.It may be secured in any suitable manner, by press' t, or otherwise. Itincludes an upward- 2 ly extending portion I 5, herein shown as ofslight Extending upwardly and outwardly from the sleeve I3 is thehousing portion I6.

I illustrate a crusher head and means for gyrating and supporting it, insubstantial conformity to a similar structure in my earlier mentionedcopending application Serial No. 378,850, now patent No. 2,359,987,granted October 10, 1944 of which the present application is acontinuation in part. The structure includes the eccentrically aperturedsleeve I1 with its antl-frictional bushing I8, and its integral gear 20in mesh with a pinion 5I on a drive shaft 50 with its pulley 52. Thegyrated head 31 supports a bowl 34 urged downwardly on the head by athrust transmitting member 35 and a nut 36. Any suitable sealing meansmay be employed about the bottom of the Vhead such as the opposedspherical surface members 43 and 45.

indicates a bowl support having a conic portion 1I conforming to theconic surface 4 of the main frame, and a portion 12 conforming to thesurface 3 of the top ofthe main frame or its outward extending ange. Thering 10 is provided with apertures 13, to permit the penetrationtherethrough of any suitable bolts or tension members 14, which areprovided with spring abutments 15, which may be adjusted as by nuts 16.The springs 11 are compressed between such abutments 15 and thehorizontal portion 8. As will appear from Figure 3, I illustrate threesets of the bolts 14 and the springs 11, in each of which six springsand bolts are shown. These are so spaced as to maintain an equalizeddownward thrust throughout about the circumference of the crusher.

The ring 10 has an upward generally cylindrical extension 18, having aplurality of vertical grooves 19 formed therein. It is inwardly screwthreaded adjacent the top, as at 88. 8| indicates any suitable packingseated in the outer face of the. upper portion thereof.

82 is an( outer generally cylindrical member having an inner conicmember 83, adapted to receive any suitable bowl liner 84. 85 is anysuitable zinc or packing therebetween. The member 82 is outwardlythreaded, as at 8B, these threads being in mesh with the threads of theportion 18. It will thus appear that the member 82, when rotated, as bymeans of any suitable lever.81,

shown in dotted line in Figure 1, is raised or lowered, depending uponthe direction of rotation. The lever or levers 81 shown in dotted linein Figure 1., may be received in any suitable pocket protecting theupper side of the screw threads from dust or grit. The lower side isprotected,

for example, by anyy suitable sealing ring 92, received in an innerportion of the member 10 andopposed to the outer wall of a lower portionof the member 82.

Th member 82 maybe locked against rotation for example by any suitableclampor clamps 98, of which only one is illustrated. It may be 'securedto the cylindrical shield 9| las by any suitable bolt 94, and includesan inwardly extending portion 95 adapted to penetrate one of thevertical grooves or slots 19. The members 18 and 82 may further belocked together, and play may be prevented, as by the employment ofbolts or thrust screws 96, with their appropriate locknuts 91. shown inFigure 2. The lowerends'of these' thrust screws abut against the top ofthe member 18.

The rotation of the ring 10 in relation to the main frame may beprevented by the employment of pins |00, mounted in lugs on the mainframe and penetrating apertured lugs |02 outwardly extending from thering 10, as shown in Figure 6; or, if desired, supporting pins or shafts|03 may be employed, as shown in Figures 1 and 2, which constitutemerely upper extensions of the pins |00 of Figure 6. These may beemployed .to perform the double function of preventing rotation of thering and of supporting any suitable feed platform or feed structure |04,

with its inner spout |05. The feed platform |04 may be adjustedvertically along the pins |03 by anysuitable sleeves |08 and nuts |01,|08, as shown in Figure 1.

The lugs |0| may be cast integral with the apron 1 of the main frame or,as illustrated in Figures 1 and 2, may be secured to the apron 1 bymeans .of bolts ||0 which pass through flanges on either side of thelugs |0|. The lugs are further provided with a downwardly pro-I Jectingange ||2 to which is welded a bar 3.

The springs 11 may be housed as by the employment of a circumferentialcover ||4, which may be formed in a plurality of sections. I i1-lustrate, for example, the use of three sections, the sections beingsecured together by means of the bars 3 above described, which overliethe joints as illustrated in Figure 3. Bolts ||5 passing through thebars |3 and the ang'e ||2 of the lugs |0| are screw threaded into bars||8, or

Aother suitable abutments integral with or secured,

ledges or faces |2| at the top of the member 83.

The member 83 is cut away as at |22 to permit the lugs |20 to be pushedin place before the bowlliner 84 is rotated in order to lock it.

Positioned above the bowl liner is a conical feed spout |23 providedwith a cylindrical upper portion |24, which is in alignment with thespout. |05 of the feed structure-|04. |25 generally in- 4 dicates an oilfeed line in communication with an oil duct |28 in the shaft'M,l I5, and|21 is an oil return line which may b connected to any i suitable oilreservoir and pump not illustrated in the drawings.

Referring to Figures 7 and'8. I illustrate a structure which varies insome respects from the form of the preceding figures. .Dierent numeralsare applied, however, only to dinerentiated parts, The mainV frame I-ais provided with outwardly extending hollow ribs, each including spacedgenerally vertical outwardly extending wall portions |50, connected byan outer wall portion |5|. These ribs are of sufficient circumferentialVextension to fill the vacant spaces shown forexample at the top and thebottom of Figure 3, where springsv are omitted. The aperture to admitthe drive shaft assembly is surrounded by an'annulus |53 having a flatouter surface |54 and a cylindrical surface |55. It will be observedthat the housing or lagging member |58 may be formed as asingle stripwhich extends entirely around the main frame and overlaps the surfaces|51. Thus there is a minimum outward projection of any`part of the mainframe. The lagging'member or housing |58 may be held in position by anysuitable clamps or screwsnot herein shown. It will be observed that themain It may be noted that Figure 7 includes such mantle fastening meansas are disclosed in Patent No. 2,341,544 issued February l5, 1944, in'lthe name of Oscar C. Gruender, the applicant in the present applicationand bowl liner fastening means such as disclosed in Patent No. 2,341,543issued February 15,'1944, in the name of Oscar C. Gruender. Details fromcopending application Serial No. 455,062 no'w Patent 2,358,038, grantedSeptember 12, 1944 in the name of Edgar B. Symons and Ewald Werner, alsoappear.

The inner f ace of the main frame is protected by a circumferentiallyextending inner protective plate |80 which may be removed and replacedwhen worn. g

TheA bowl structure 10a includes a preferably integral ring having anannular downwardly concave recess defined in' part by an inner conicsurface |10 and an outer generally cylindrical surface |1|. The main-frame has an opposed conic surface |12 and an outer face |13 which isgenerally cylindrical but is slightly outwardly bulged. Preferably thereis a clearance between the lbowl ring and the top of the main frame asat |15.

With reference to the adjustment of the lbofwl proper in relation to theouter bowl ring 10a, the cylindrical shield Sla has secured thereto oneor more outwardly extending studs |80 on each of which is mounted alocking plate |8| having an adjusting slot |82, an inward extension |83seating in a notch in the lower edge of the member 9|a and a further.inward extension |84 which may extend into one of the vertical groovesor slots 19.

Thus after the bowl has been set at any desired adjustment in relationto the bowl ring and the main frame, the above locking structure iseffective to prevent unintended rotation.

4It will be realized that, .whereas I have described and illustrated apracticaI and operative device, nevertheless many changes may be made inthe size, shape, number and disposition of .parts without departingmaterially 'from the spirit ofv my invention. I therefore wish mydescription and drawings to be taken as -in a broad sense illustrativeor diagrammatic, rather than asllimiting me to my precise showing.

Theuse and operation of my invention are as follows:

portion I of which penetrates within the head 3I,- and serves as abearing'for the upward ex- .tension of the eccentric I1 rwithin thehead.

However, it is not desirable to support the head upon the eccentric I1,and I therefore provide a surrounding socket bearing including theupwardly concaved spherical surfaced supporting member 30, which isopposed to a corresponding- 1y formed lower spherical portion 33 of thehead. This particular construction permits the member 30 to take aportion of the horizontal or lateral crushing force, besides sustainingthe entire vertical crushing force,

Rotation of the shaft 5I! and the gears 5I and 20 results in rotation ofthe eccentric I1. The eccentric has a `bore concentric with the axisA--A of the shaft I5, :but its outer cylindrical .bearing surface isinclined'at an angle with respect toits bore, and is concentricw-ith theaxis B-B.. These two axes intersect at point C, as illustrated in Figure2, and it is around this point that the head gyrates, resulting in alarger movement at the bottom of the head than at its top.

In order to prevent breakage due to the passage of tramp iron .oruncrushable material through the machine, I provide tension members,

or rods 14, with their accompanying compressionr tom by the flange 2 andat the top by the flange K 3, which recess may be closed by plates IIII,the

springs thus being concealed and protected against water and othercorrosive elements, with the consequent improvement in the appearance ofthe machine.

In order to protect the threads 80, 86 from dust, I provide in effect atelescopic housing, the inner portion of which is provided by the ymember 82 and the outer portion by the welded ring 9|, the inner andouter portion moving as a unit. 92 is a dust seal between the innerportion and the bowl supporting ring 10 and 8l is a dust seal betweenthe outer port-ion 9| and the outer face of the upward extension 18 fromthe ring 10. The result is a simple, efcient dust seal for both the topand bottom of the adjusting threads.

In order to lock the bowl when it is set, I may employ the set screws96, which take up play between the opposed threads and thepositive-locking member 93, 95, the inner portion 95 of which seats inone of the vertical grooves 19. I may employ any desired number of themembers 93,. 95, lbut three are ample, and one may .be enough. Theenclosed spacing of the vertical slots or grooves 19 permits the deviceto be locked at any desired setting. I may prevent rotation of the bowlring 10 on the frame either 6 by the pins |00', screw threaded or by thefeed spout supports |03.

The main frame structure shown in Figures 7 and 8 varies somewhat from`the structure of 5 earlier views. It provides a clean smooth looklngexterior appearance, with a. minimum of projections. The rib portions|50, contribute substantially to strengthening the main frame.

I claim: 1. In a gyratory crusher, a. main frame including acircumferentially extending outer wall, said into sockets I 0I outerwall having a bottom flange'extending outwardly therefrom and a topflange extending outwardly therefrom, said flanges having outervertically aligned outer faces, said `main frame having outwardly offsetribs circumferentially spaced thereabout, said ribs being integral withsaid flanges and defining with said flanges, a plurality of outwardrecesses, and a removable 20 outer housing shell surrounding said mainframe member, said upper and lower main frame flanges being recessed intheir outer faces, to receive the upper and Alower edges of said housingshell, the exterior of said housing shell being flush with the o uterfaces of said flanges.

2. In a gyratory crusher a main frame, including a circumferentiallyextending outer wall, said outer Wall having a reinforcing bottom flangeoutwardly extending therefrom and extending circumferentiallythereabout, a top flange extending outwardly therefromandcircumferentially thereabout, said bottom and top flanges having outercircumferential faces generally' vertically aligned and havingcircumferentially opposed recesses, said main frame having outwardlyoffset ribs circumferentally spaced thereabout, said ribs being integralwith said flanges and defining, with said flanges, a plurality of`outward recesses, said recesses being inwardly 40 closed bysaid outermain frame wall, and a radially removable outer housing shellsurrounding said main frame member and engaging said upper and lowermain frame flanges with its upper and lower edges seated in opposedrecesses in said flanges, said shell masking said recesses and defininga closed and substantially dust-tight space.

3. The structure of claim 2 characterized by and including a shellformed in a single piece 5o and extending substantially entirely aboutthe main frame.

4. In a gyratory crusher having a bowl and adjusting means for the bowl,a. circumferential main frame, a bowl support tiltably mounted on themain frame, and including an upwardly extending generally cylindricalsupporting sleeve, said sleeve being inwardly screw threaded and havinga plurality of circumferentially spaced depressions in its outer face, abowl structure in- 00 cluding an outer portion threaded to engage theinward screw threading of said supporting sleeve, an outer sealingsleeve mounted on -said bowl structure and extending downwardly aboutthe exterior of the supporting sleeve in telescopic relationship andmeans for locking the sleeves against relative rotation and for therebypreventing relative rotation of bowl structure and supporting sleeveincluding a locking member movably mounted on said sealing sleeve and 7oadapted to penetrate said depressions.

5. In a gyratory Crusher having a bowl and adjusting means for the bowl,a. circumferential main frame, a bowl support tiltably mounted on themain frame, and including an upwardly ex- 15 tending generallycylindrical supporting sleeve.

. 1 said sleeve being inwardly screw threaded and having a plurality ofcircumferentially spaced depressions in its outer face, a bowl structureincluding an out-er portion threaded to engage the inw d screw threadingof said supporting sleeve, te? outer sealing sleeve mounted 'on saidbowl st cture and extending downwardly about the exterior of thesupporting sleeve in telescopic relationship and means for locking thesleeves against relative rotation and for thereby preventing relativerotation of bowl structure and supporting sleeve including a lockingplate and means for movably securing it to the exterior of said sealingsleeve, vsaid plate including an inward extension adapted toextend intosaid depressions.

6. In a, gyratory vcrusher having a bowl and adjusting means for thebowl, a circumferential main frame, a bowl support tiltably mounted onthe mainframe, and includingan upwardly extending generally cylindricalsupporting sleeve,

said sleeve being inwardly screw threaded and having la. plurality ofcircumferentially.. spaced depressionsin its outer face, a bowlstructure including an outer portion threaded to engage the inward screwthreading of said supporting sleeve,

an outer sealing sleeve mounted on said bowl structure and extendingdownwardly about the exterior of the supporting sleevein telescopicrelationship and means for locking the sleeves against relative rotationand for thereby preventing relative' rotation of bowl structure andsupporting sleeve including a locking plate'and means for movablysecuring it to the exterior of said sealing sleeve, said plate includingan inward extension adapted to extend into said depressions, the loweredge of said sealing ring being notched to receive said inwardextension. f

7. In a gyratory crusher having a bowl and adjusting means for the bowl,a circumferential main frame, a bowl support tiltably mounted on themain frame, and including an upwardly extending generally cylindricalsupporting sleeve, said sleeve being inwardly screw threaded and havinga plurality of circumferentially spaced depressions in its outerface, abowl structure including an outer portion threaded to engage the inwardscrew threading of said supporting sleeve, an outer sealing sleevemounted on said bowl structure and extending downwardly about theexterior of the supporting sleeve in telescopic relationship and meansfor locking the sleeves against relative rotation and for therebypreventing relative rotation of bowl structure and supporting sleeve,including a bolt extending outassaoao 8. In a gyratory crusher, a mainiramen. bowl support on said main trame, having an'fupstanding generallycylindrical portion with an internal thread thereon, abowl adjustablewithin said bowl support and having a generally cylindrical inner sleevewith an external thread in mesh with said rst-mentioned thread, anexteriorsleve exwardly from said sealing ring, a locking plate h-aving avertical adjustment slot through which said f bolt passes, a nut adaptedto urge said locking plate against the outer face of said sealing sleeveand an inward projection on said locking plate adapted to enter saiddepressions.-

tending downwardly about the exterior of the upstanding portion of thebowl support, said exterior sleeve being permanently connected totheinterior sleeve, the two sleeves constituting a substantially closedhousing, said upstanding cylindrical portion having a plurality oflocking members formed in its exterior surface, and a looking elementmovably ,mounted on said down' wardly extending exterior sleeve, adaptedfor locking interpenetration with said locking members.

9. In a gyratory crusher, a main frame, a bowl support on said mainframe, having an upstanding generally cylindrical portion with aninternal thread thereon, a bowl adjustable ,within said bowl support andhaving a generally cylindrical inner sleeve with an vexternal thread inmesh with said rst-mentioned thread, an exterior sleeve extendingdownwardly about the exterior of the upstanding portion of the bowlsupport, said exterior sleeve being permanently connected to theinterior sleeve, the two sleeves constituting a substantially closedhousing, said upstanding cylindrical portion having a plurality oflocking members formed in its exterior surface, and a looking elementmovably mounted on said downwardly extending exterior sleeve, adaptedfor locking interp'enetration with said locking members, said lockingmembers being in the form of vertical grooves having a substantiallyvertical extension.

OSCAR C. GRUENDER.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 1,553,202 Symons .g Sept. 8, 19251,592,313 Symons July 13, 1926 1,791,584 Symons Feb. 10, 1931 1,863,529Symons June 14, 1932 1,868,338 Symons July 19, 1932 `1,960,980 RumpelMay 29, 1934 2,147,833 Fahrenwald Feb. 21, 1939 2,158,778 Rumpel May 16,1939 2,159,670 Neitzke May 23, 1939 2,221,342 Butler Nov. 12, 1940FOREIGN PATENTS Number Country. Date 435,237 Great Britain Sept. 17,1935

